<template>

  <el-container class="home_container">
    <!--头部-->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <!--侧边栏-->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu
          :default-active="activePath"
          router
          :collapse="isCollapse"
          unique-opened
          :collapse-transition="false"
          background-color="#333744"
          text-color="#fff"
          active-text-color="#ffd04b">
          <!--一级菜单-->
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <!--二级菜单-->
            <el-menu-item @click="saveNavState('/' + children.path)" :index=" '/' + children.path"  v-for="children in item.children" :key="children.id">
              {{children.authName}}
            </el-menu-item>

          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <!--路由占位符-->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
  export default {
    data() {
      return {
        menuList: [],
        iconsObj: {
          '125': 'iconfont icon-users',
          '103': 'iconfont icon-tijikongjian',
          '101': 'iconfont icon-shangpin',
          '102': 'iconfont icon-danju',
          '145': 'iconfont icon-baobiao'
        },
        isCollapse: false,
        activePath: ''
      }
    },
    created() {
      this.getMenuList()
      this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
      logout() {
        window.sessionStorage.clear();
        this.$router.push('login')
      },
      async getMenuList() {
        const {data: res} = await this.$http.get('menus');
        if (res.meta.status !== 200) return this.$message.error({message: res.msg});
        //console.log(res)
        this.menuList = res.data
      },
      toggleCollapse() {
        this.isCollapse = !this.isCollapse
      },
      saveNavState(activePath) {
        window.sessionStorage.setItem('activePath', activePath)
        this.activePath = activePath
      }

    }
  }
</script>

<style lang="less" scoped>
  .home_container{
    height: 100%;
  }
  .el-header{
    background-color: #63a35c;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    > div {
      display: flex;
      align-items: center;
    }
  }
  .el-aside{
    background-color: #333744;
    .el-menu{
      border-right: none;
    }
  }
  .el-main{
    background-color: #eaedf1;
  }
  .iconfont{
    margin-right: 10px;
  }
  .toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }

</style>
